I decided to ask the crew of Steven Universe through Twitter when Coach Steven (aka. the next episode) will be airing. Here is what they have to say:
Aivi (one of the composers of music): https://twitter.com/waltzforluma/status/475106369041752064
Heard it won't be airing for awhile.
Zach Callison (voice of Steven): https://twitter.com/ZachCallison/status/473339601117917184
Doesn't know, recommends asking Cartoon Network.
Susan Egan (voice of (spoilers) Rose): https://twitter.com/IAmSusanEgan/status/480743838865440768
Doesn't know.
Deedee Magno Hall (voice of Pearl): https://twitter.com/TheParDee/status/480768075977854976
Doesn't know, suggests checking Steven Universe FB page.
Michaela Dietz (voice of Amethyst): https://twitter.com/whammybah/status/480780800204349441
Doesn't know, but is sure she'll feel it in the air like impeding rain.
I will be constantly updating this post when a new crew member tells me him (or her) response.
This post is also a reminder to never accept any release date for an episode unless confirmed by a crew member of that show.